Anyone use APM Studio? APM product management would like some feedback

I know a number of you have seen or are currently using APM Studio (http://apmstudio.org), one of our field-developed tools that offers an Eclipse plugin to provide capabilities of interacting with APM in the IDE. I'd like to collect some feedback. Can you please respond to the following?

- what are the main features you use in APM Studio? what use cases did it solve?
- what capabilities do you not use? why?
- what capabilities would you like to see added to APM Studio?
- what use cases did you think it would address, but fell short?
- is the tool relatively stable in your environment?
- what do you think of the UI look and feel?